A liquid crystal display panel (100A) according to an embodiment of the present invention is a liquid crystal display panel including: a first substrate (2) having a pixel electrode (4) formed thereon; a second substrate (3) opposing the first substrate (2); and a liquid crystal layer (1) retained between the first substrate (2) and the second substrate (3). The liquid crystal layer (1) edges near at least one of side faces of the liquid crystal display panel (100A), and includes a black layer (52) in contact with the side face of the liquid crystal layer (1) along which the liquid crystal layer (1) edges near at least one of the side faces of the liquid crystal display panel (100A).
|
13. A liquid crystal display panel comprising a first substrate having a pixel electrode formed thereon, a second substrate opposing the first substrate, and a liquid crystal layer retained between the first substrate and the second substrate, wherein,
the liquid crystal layer edges near at least one of side faces of the liquid crystal display panel,
the liquid crystal display panel comprises a black layer in contact with a side face of the liquid crystal layer, along which side face the liquid crystal layer edges near at least one of the side faces of the liquid crystal display panel, and
when viewed from a normal direction of the liquid crystal display panel, one side of an outer edge of the pixel electrode is level with one side of an outer edge of the first substrate.
1. A liquid crystal display panel comprising a first substrate having a pixel electrode formed thereon, a second substrate opposing the first substrate, and a liquid crystal layer retained between the first substrate and the second substrate, wherein,
the liquid crystal layer edges near at least one of side faces of the liquid crystal display panel,
the liquid crystal display panel comprises a black layer in contact with a side face of the liquid crystal layer, along which side face the liquid crystal layer edges near at least one of the side faces of the liquid crystal display panel, and
when viewed from a normal direction of the liquid crystal display panel, at least one of the side faces of the liquid crystal layer is level with both a side face of the first substrate and a side face of the second substrate.
12. A liquid crystal display device comprising a first liquid crystal display panel and a second liquid crystal display panel, wherein,
each of the first liquid crystal display panel and the second liquid crystal display panel includes
a first substrate having a plurality of pixel electrodes formed thereon, a second substrate opposing the first substrate, and a liquid crystal layer retained between the first substrate and the second substrate,
the liquid crystal layer edging near at least one of the side faces of each liquid crystal display panel;
the plurality of pixel electrodes of the first liquid crystal display panel include a first pixel electrode such that, when viewed from a normal direction of the first liquid crystal display panel, one side of an outer edge of the pixel electrode is level with one side of an outer edge of the first substrate;
the plurality of pixel electrodes of the second liquid crystal display panel include a second pixel electrode such that, when viewed from a normal direction of the second liquid crystal display panel, one side of an outer edge of the pixel electrode is level with one side of an outer edge of the first substrate; and
the first liquid crystal display panel and the second liquid crystal display panel are disposed so that the first pixel electrode and the second pixel electrode adjoin each other.
2. The liquid crystal display panel of
3. The liquid crystal display panel of
4. The liquid crystal display panel of
5. The liquid crystal display panel of
6. The liquid crystal display panel of
a first alignment film and a second alignment film formed between the liquid crystal layer and, respectively, the first substrate and second substrate, each of the first alignment film and the second alignment film being formed so as to be in contact with the liquid crystal layer; and
polarizers respectively provided on sides of the first substrate and the second substrate respectively opposite from the liquid crystal layer.
7. The liquid crystal display panel of
the liquid crystal layer contains a nematic liquid crystal material, the nematic liquid crystal material having positive dielectric anisotropy; and
the first alignment film and the second alignment film are each a vertical alignment film.
8. The liquid crystal display panel of
the liquid crystal layer contains a nematic liquid crystal material, the nematic liquid crystal material having positive dielectric anisotropy;
at least one of the first alignment film and the second alignment film is a horizontal alignment film;
the horizontal alignment film has been subjected to an alignment treatment; and
in the plurality of liquid crystal regions, in the absence of applied voltage, an in-plane azimuth of liquid crystal molecules at an interface of the horizontal alignment film having been subjected to an alignment treatment is parallel to an azimuth that is defined by the alignment treatment.
9. The liquid crystal display panel of
10. The liquid crystal display panel of
the pixel electrode includes a pair of interdigitated electrodes,
the pair of interdigitated electrodes including
a first electrode and a second electrode located within a pixel, and
a third electrode located between the first electrode and the second electrode; and
a width of each of the first electrode and the second electrode is half of a width of the third electrode.
11. The liquid crystal display panel of
the liquid crystal layer contains a nematic liquid crystal material, the nematic liquid crystal material having negative dielectric anisotropy; and
the first alignment film and the second alignment film are each a vertical alignment film.
14. The liquid crystal display panel of
15. The liquid crystal display panel of
16. The liquid crystal display panel of
17. The liquid crystal display panel of
a first alignment film and a second alignment film formed between the liquid crystal layer and, respectively, the first substrate and second substrate, each of the first alignment film and the second alignment film being formed so as to be in contact with the liquid crystal layer; and
polarizers respectively provided on sides of the first substrate and the second substrate respectively opposite from the liquid crystal layer.
18. The liquid crystal display panel of
the liquid crystal layer contains a nematic liquid crystal material, the nematic liquid crystal material having positive dielectric anisotropy;
at least one of the first alignment film and the second alignment film is a horizontal alignment film;
the horizontal alignment film has been subjected to an alignment treatment; and
in the plurality of liquid crystal regions, in the absence of applied voltage, an in-plane azimuth of liquid crystal molecules at an interface of the horizontal alignment film having been subjected to an alignment treatment is parallel to an azimuth that is defined by the alignment treatment.
19. The liquid crystal display panel of
20. The liquid crystal display panel of
the liquid crystal layer contains a nematic liquid crystal material, the nematic liquid crystal material having negative dielectric anisotropy; and
the first alignment film and the second alignment film are each a vertical alignment film.
|
The present invention relates to a liquid crystal display panel and a liquid crystal display device.
Liquid crystal display devices have advantages such as light weight, thinness, and low power consumption, and are utilized not only for large-size television sets but also as small-sized display devices, e.g., display sections of mobile phones.
A liquid crystal display device includes a liquid crystal display panel, a backlight device, circuitry and a power supply for supplying various electrical signals to the liquid crystal display panel, and a housing which accommodates these. The liquid crystal display panel has a displaying region in which a plurality of pixels are arrayed, and a frame region around it.
The displaying region (active area) of a generic liquid crystal display device includes pixel electrodes, thin film transistors (TFTs), and the like provided therein, in which images, videos, or the like are displayed. In the frame region are provided: a sealing portion at which substrates are attached together so that a liquid crystal material is sealed in between the substrates; connection lines connected to the gate electrodes and source electrodes of the TFTs; terminals for connection with external driving circuits which input signal/scanning voltages; and so on. In the present specification, any region in which connection lines to the gate electrodes and source electrodes of TFTs, terminals for connection with external driving circuits which input signal/scanning voltages, and the like are located may be referred to as a connection region. In order to prevent deteriorations in display quality at the outer periphery of the active area due to leakage of light from the backlight, disorderly alignment of liquid crystal molecules, and so on, a black mask (light-shielding member) is usually provided in the frame region. Thus, the frame region is a region not contributing to displaying (invalid displaying portion). While liquid crystal display devices are becoming narrower and narrower in their frames each year, it is difficult to eliminate the frame region.
Now, a frame region 81a of a generic liquid crystal display panel (e.g., a TN (Twisted Nematic) type liquid crystal panel) 500 will be described with reference to
The liquid crystal display panel 500 has a displaying region 81 and a frame region 81a located at the periphery of the displaying region 81. A plurality of pixel electrodes 4 are formed in the displaying region 81 of the liquid crystal display panel 500. The frame region 81a is a region which does not contribute to displaying. In the frame region 81a of the liquid crystal display panel 500, a sealing portion 99 is formed so as to surround the liquid crystal layer 1. The width Ds of the frame region 81a is expressed as a sum of the width D1 of the sealing portion 99 and the distance D2 between the sealing portion 99 and a pixel electrode 4 which is adjacent to the sealing portion 99 (where the distance D2 may be about 1.5 mm, for example). The sealing portion 99 is formed by using a dispenser apparatus, a screen printer, or the like to apply a sealant on a substrate so as to constitute a predetermined pattern, and, after this is attached to the other substrate, curing the sealant. The final width D1 of the sealing portion 99 is about 1 mm or more.
On the other hand, Patent Document 1 discloses a liquid crystal display panel having a polymer dispersed liquid crystal (PDLC) layer in which a curable vinyl compound is used. Patent Document 2 states that forming a polymer dispersed liquid crystal layer from a curable vinyl compound provides an effect of adhesively bonding the pair of substrates, without even forming the sealing portion 99 which would belong to the liquid crystal display panel 500.
The liquid crystal display panel disclosed in Patent Document 1, in which no sealing portion is formed, has a problem in that the display quality of the periphery of the displaying region becomes lower than the display quality in the central portion of the displaying region, when viewed obliquely.
The present invention has been made in view of the above problems, and an objective thereof is to provide a liquid crystal display panel in which, even with a narrowed frame region, the display quality of the periphery of the displaying region is unlikely to worsen when viewed obliquely.
A liquid crystal display panel according to an embodiment of the present invention is a liquid crystal display panel comprising a first substrate having a pixel electrode formed thereon, a second substrate opposing the first substrate, and a liquid crystal layer retained between the first substrate and the second substrate, wherein, the liquid crystal layer edges near at least one of side faces of the liquid crystal display panel, and the liquid crystal display panel comprises a black layer in contact with a side face of the liquid crystal layer, along which side face the liquid crystal layer edges near at least one of the side faces of the liquid crystal display panel.
In one embodiment, the black layer has an OD value of 2.0 or more.
In one embodiment, the liquid crystal display panel is a liquid crystal display panel comprising a first substrate having a pixel electrode formed thereon, a second substrate opposing the first substrate, and a liquid crystal layer retained between the first substrate and the second substrate, wherein, the liquid crystal layer edges near at least one of side faces of the liquid crystal display panel; and the liquid crystal display panel comprises a specular layer in contact with a side face of the liquid crystal layer, along which side face the liquid crystal layer edges near at least one of the side faces of the liquid crystal display panel.
In one embodiment, the liquid crystal layer includes a plurality of liquid crystal regions containing a nematic liquid crystal material and polymer-containing walls between adjacent ones of the plurality of liquid crystal regions.
In one embodiment, a distance between the side face of the liquid crystal layer and the at least one side face of the liquid crystal display panel is 3 mm or less.
In one embodiment, when viewed from a normal direction of the liquid crystal display panel, at least one of the side faces of the liquid crystal layer is level with both a side face of the first substrate and a side face of the second substrate.
In one embodiment, when viewed from a normal direction of the liquid crystal display panel, one side of an outer edge of the pixel electrode is level with one side of an outer edge of the first substrate.
In one embodiment, the above liquid crystal display panel further comprises: a first alignment film and a second alignment film formed between the liquid crystal layer and, respectively, the first substrate and second substrate, each of the first alignment film and the second alignment film being formed so as to be in contact with the liquid crystal layer; and polarizers respectively provided on sides of the first substrate and the second substrate respectively opposite from the liquid crystal layer.
In one embodiment, the nematic liquid crystal material has positive dielectric anisotropy; and the first alignment film and the second alignment film are each a vertical alignment film.
In one embodiment, the nematic liquid crystal material has positive dielectric anisotropy; at least one of the first alignment film and the second alignment film is a horizontal alignment film; the horizontal alignment film has been subjected to an alignment treatment; and in the plurality of liquid crystal regions, in the absence of applied voltage, an in-plane azimuth of liquid crystal molecules at an interface of the horizontal alignment film having been subjected to an alignment treatment is parallel to an azimuth that is defined by the alignment treatment.
In one embodiment, an alignment state of the nematic liquid crystal material is controlled with a lateral electric field.
In one embodiment, the pixel electrode includes a pair of interdigitated electrodes, the pair of interdigitated electrodes including a first electrode and a second electrode located within a pixel, and a third electrode located between the first electrode and the second electrode; and a width of each of the first electrode and the second electrode is half of a width of the third electrode.
In one embodiment, the nematic liquid crystal material has negative dielectric anisotropy; and the first alignment film and the second alignment film are each a vertical alignment film.
A liquid crystal display device according to an embodiment of the present invention is a liquid crystal display device comprising a first liquid crystal display panel and a second liquid crystal display panel, wherein, each of the first liquid crystal display panel and the second liquid crystal display panel includes a first substrate having a plurality of pixel electrodes formed thereon, a second substrate opposing the first substrate, and a liquid crystal layer retained between the first substrate and the second substrate, the liquid crystal layer edging near at least one of the side faces of each liquid crystal display panel; the plurality of pixel electrodes of the first liquid crystal display panel include a first pixel electrode such that, when viewed from a normal direction of the first liquid crystal display panel, one side of an outer edge of the pixel electrode is level with one side of an outer edge of the first substrate; the plurality of pixel electrodes of the second liquid crystal display panel include a second pixel electrode such that, when viewed from a normal direction of the second liquid crystal display panel, one side of an outer edge of the pixel electrode is level with one side of an outer edge of the first substrate; and the first liquid crystal display panel and the second liquid crystal display panel are disposed so that the first pixel electrode and the second pixel electrode adjoin each other.
According to an embodiment of the present invention, there is provided a liquid crystal display panel in which, even with a narrowed frame region, the display quality of the periphery of the displaying region is unlikely to worsen when viewed obliquely.
Hereinafter, with reference to the drawings, embodiments of the liquid crystal display panel according to the present invention will be described. However, the present invention is not limited to the following embodiments.
With reference to
As shown in
The liquid crystal display panel 100A includes a first alignment film and a second alignment film (neither being shown) which are formed so as to be in contact with the liquid crystal layer 1, such that the first alignment film and the second alignment film are formed between the liquid crystal layer 1 and, respectively, the first substrate 2 and second substrate 3. Furthermore, the liquid crystal display panel 100A include polarizers 22a and 22b which are provided on the sides of the first substrate 2 and the second substrate 3 respectively opposite from the liquid crystal layer 1. On the first substrate 2, thin film transistors (TFTs) (not shown) are formed for the respective pixels, and a color filter layer 32 is formed on the second substrate 3 (see
Next, the black layer 52 will be described with reference to
The inventors have conducted simulations as to the display quality of the liquid crystal display panel 200 lacking the black layer 52 and the display quality of the liquid crystal display panel 100A where the black layer 52 had various OD (Optical Density) values. As is well known, an OD value is expressed as −Log I/I0, where I0 is the incident light amount and I is the transmitted light amount. As the OD value increases, the transmitted light amount decreases. In the following, the light transmission characteristics of the black layer 52 are represented by OD values. As for simulation conditions, the first substrate 2 and second substrate 3 of the liquid crystal display panels 100A and 200 each had a thickness of 1 mm. Any component element of the liquid crystal display panels 100A and 200 (e.g., the liquid crystal layer 1, the pixel electrode 4, and the like) other than the first substrate 2 and second substrate 3 is thin, and therefore is ignored. A housing 29 was disposed on the outside of the liquid crystal display panels 100A and 200, with a backlight BL being disposed on the side of the first substrate 2 away from the second substrate 3. The housing 29 had a reflectance of 18% (standard reflectance). Moreover, the liquid crystal display panels 100A and 200 each had a frame region 81a located in the periphery of the panel, and a displaying region 81 on the side of the frame region 81a away from the housing 29. It was assumed that the backlight BL had a luminance of 100, and the polarizers 22a and 22b each had a transmittance of 50%. Furthermore, light being emitted from the backlight BL and incident on the housing 29 had an angle θ. The only difference between the liquid crystal display panel 100A and the liquid crystal display panel 200 is whether the black layer 52 is provided or not.
In a white displaying state of the liquid crystal display panels 100A and 200, the light transmittance was about 5% to 10%. In the liquid crystal display panel 200, light which was emitted from the backlight BL, reflected by the housing 29, and emitted from the liquid crystal display panel 200 was found to have a transmittance of 9%. Therefore, the light reflected by the housing 29 may cause whitish displaying, thus detracting from display quality. In particular, when θ is 30°, display quality is lowered within 1.2 mm inside (toward the displaying region 81) from the side face of the liquid crystal display panel 200; when θ is 45°, display quality is lowered within 2 mm inside from the side face of the liquid crystal display panel 200; and when θ is 60°, display quality is lowered within 3.5 mm inside from the side face of the liquid crystal display panel 200. For example, when θ is 60° and the frame region 81a has a width of 3 mm, display quality is lowered within 0.5 mm inside from the frame region 81a.
The aforementioned deterioration in display quality is reduced by placing the black layer 52 between the housing and the liquid crystal layer 1 of the liquid crystal display panel 100A. Specifically, when the OD value of the black layer 52 is 1.0, light which is reflected by the housing 29 and emitted from the liquid crystal display panel 100A has a transmittance of about 2%; and when the OD value of the black layer 52 is 2.0 or more, light which is reflected by the housing 29 and emitted from the liquid crystal display panel 200 has a transmittance of about 0%. Furthermore, when the OD value of the black layer 52 is 2.0, the liquid crystal display panel 100A has a contrast ratio of 1:111; and when the OD value of the black layer 52 is 3.0, the liquid crystal display panel 100A has a contrast ratio of 1:1111. When the OD value of the black layer 52 is 4.0, the liquid crystal display panel 100A has a contrast ratio of 1:11111. Therefore, the OD value of the black layer 52 is preferably 2.0 or more, and more preferably 3.0 or more.
The black layer 52 is made of a thermosetting or photocurable black resin, for example. Otherwise, the black layer 52 may be made of a black film or tape, for example. Forming the black layer 52 can prevent moisture and the like from intruding into the liquid crystal layer 1. Note that, when the width Ds of the liquid crystal display panel 500 shown in
Next, with reference to
As shown in
Furthermore, as shown in
Next, with reference to
The liquid crystal display panels 100A and 100B each include a first vertical alignment film (not shown) which is formed on the first substrate 2 so as to be in contact with the liquid crystal layer 1 and a second vertical alignment film (not shown) which is formed on the second substrate 3 so as to be in contact with the liquid crystal layer 1. The liquid crystal region 11 of the liquid crystal layer 1 contains a nematic liquid crystal material Lc having a positive dielectric anisotropy.
As shown in
Especially in the liquid crystal display panel 100B, it is preferable that, as shown in
By thus forming the pair of interdigitated electrodes 4a and 4b, as shown in
The liquid crystal display panels 100A and 100B can be modified into liquid crystal display panels of the CPA (Continuous Pinwheel Alignment) driving mode, for example.
As shown in
In the liquid crystal display panel 100C, too, similarly to the liquid crystal display panel 100B, it is preferable that one side of the outer edge of a pixel electrode 4 is level with one side of the outer edge of the first substrate 2 when viewed from the normal direction of the liquid crystal display panel 100C. It is preferable that the specular layer 53 is disposed level with the outer edge of the first substrate 2 that is level with the one side of the outer edge of the pixel electrode 4. Specifically, when viewed from the normal direction of the liquid crystal display panel 100C, one side of the outer edge of the subpixel electrode 4c is level with one side of the outer edge of the first substrate 2. Furthermore, it is preferable that the pixel electrode 4 of each pixel p1 is formed so as to be axisymmetrical with respect to an axis of symmetry T1, T2 which is a line parallel to the side of the first substrate 2 that is level with the specular layer 53 and which extends through the center of the pixel p1, when viewed from the normal direction of the liquid crystal display panel 100C.
By thus forming the pixel electrode 4, as shown in
Other than the above-described liquid crystal display panel 100C of the CPA driving mode, the liquid crystal display panels 100A and 100B may be modified into liquid crystal display panels having fishbone-type pixel electrodes 4, or liquid crystal display panels of the 4D-RTN (4 Domain-Reverse Twisted Nematic) driving mode, for example.
Next, with reference to
As shown in
As shown in
In the liquid crystal display panels 100D and 100E, too, similarly to the liquid crystal display panel 100B, it is preferable that one side of the outer edge of a pixel electrode 4 is level with one side of the outer edge of the first substrate 2 when viewed from the normal direction of the liquid crystal display panel 100D (or the liquid crystal display panel 100E). It is preferable that the specular layer 53 is disposed level with the outer edge of the first substrate 2 that is level with the one side of the outer edge of the pixel electrode 4. Specifically, when viewed from the normal direction of the liquid crystal display panel 100D (or the liquid crystal display panel 100E), one side of the outer edge of a pixel electrode 4e (or a pixel electrode 4f) is level with one side of the outer edge of the first substrate 2. Furthermore, it is preferable that the pixel electrode 4 of each pixel p1 is formed so as to be axisymmetrical with respect to an axis of symmetry T1, T2 which is a line parallel to the side of the first substrate 2 that is level with the specular layer 53 and which extends through the center of the pixel p1, when viewed from the normal direction of the liquid crystal display panel 100D (or the liquid crystal display panel 100E). In the liquid crystal display panel 100D, it is preferable that one side of the outer edge of each branch 4ec is level with one side of the outer edge of the first substrate 2.
By thus forming the pixel electrode 4, as shown in
Next, with reference to
The liquid crystal display device 1000 has a liquid crystal display panel 100F1 and a liquid crystal display panel 100F2. The liquid crystal display panel 100F1 and the liquid crystal display panel 100F2 each include a first substrate 2 on which pixel electrodes 4 are formed, a second substrate 3 opposing the first substrate, and a liquid crystal layer 1 retained between the first substrate 2 and the second substrate 3. The liquid crystal layer 1 edges near at least one of the side faces of each of the liquid crystal display panels 100F1 and 100F2. The liquid crystal display panel 100F1 and the liquid crystal display panel 100F2 are disposed so that a first pixel electrode 4ca, such that one side of the outer edge of the pixel electrode 4 is level with one side of the outer edge of the first substrate 2 when viewed from the normal direction of the liquid crystal display panel 100F1, adjoins a second pixel electrode 4cb, such that one side of the outer edge of the pixel electrode 4 is level with one side of the outer edge of the first substrate 2 when viewed from the normal direction of the liquid crystal display panel 100F2. In the liquid crystal display device 1000 as such, the liquid crystal display panel 100F1 and the liquid crystal display panel 100F2 are disposed in a plane-symmetric manner with respect to a plane of symmetry which is the boundary between the liquid crystal display panel 100F1 and the liquid crystal display panel 100F2, and therefore, without providing the specular layer 53 described above, the aforementioned optical compensation effect is obtained and a high display quality is provided. With the liquid crystal display device 1000, the display quality during viewing from an oblique direction, in particular, is unlikely to worsen.
The liquid crystal display panels 100F1 and 100F2 have substantially the same structure as the liquid crystal display panel 100C, for example. However, unlike the liquid crystal display panel 100C, the liquid crystal display panels 100F1 and 100F2 do not have the specular layer 53. In the liquid crystal display panels 100F1 and 100F2, too, it is preferable that one side of the outer edge of a pixel electrode 4 is level with one side of the outer edge of the first substrate 2 when viewed from the normal direction of the liquid crystal display panel 100F1 (or the liquid crystal display panel 100F2). It is also preferable to form each pixel electrode 4 so that, when the liquid crystal display panel 100F1 and the liquid crystal display panel 100F2 are deployed in place, the pixel electrode 4 of the liquid crystal display panel 100F1 is axisymmetrical with the pixel electrode 4 of the liquid crystal display panel 100F2 with respect to an axis of symmetry which is the boundary between the liquid crystal display panel 100F1 and the liquid crystal display panel 100F2.
Thus, according to an embodiment of the present invention, there is provided a liquid crystal display panel and liquid crystal display device in which, even with a narrowed frame region, the display quality of the periphery of the displaying region is unlikely to worsen when viewed obliquely.
According to an embodiment of the present invention, there are provided a liquid crystal display panel and a liquid crystal display device which are suitable for a narrowed frame region. In particular, such a liquid crystal display panel is suitably used as a medium to small-sized device, e.g., an electronic book, a mobile phone, or a smartphone.
Sakai, Akira, Watanabe, Hisashi, Asaoka, Yasushi, Satoh, Eiji, Miyazaki, Akiko, Iyama, Yuichi
Patent | Priority | Assignee | Title |
Patent | Priority | Assignee | Title |
4834509, | Dec 23 1986 | Asahi Glass Company Ltd | Liquid crystal optical device and process for its production and method for its operation |
5084777, | Nov 14 1989 | TRANSAMERICA BUSINESS CREDIT CORP | Light addressed liquid crystal light valve incorporating electrically insulating light blocking material of a-SiGe:H |
5835179, | Aug 30 1996 | Sony Corporation | Liquid crystal display |
6177972, | Feb 04 1999 | AU Optronics Corporation | Polymer stabilized in-plane switched LCD |
6429914, | Dec 17 1997 | BISHOP DISPLAY TECH LLC | Polymer dispersion type liquid crystal display panel and its manufacturing method |
6642984, | Dec 08 1998 | Sharp Kabushiki Kaisha | Liquid crystal display apparatus having wide transparent electrode and stripe electrodes |
7190429, | Dec 08 1998 | Sharp Kabushiki Kaisha | Liquid crystal display apparatus having wide transparent electrode and stripe electrodes |
7230664, | Oct 31 2000 | Sharp Kabushiki Kaisha | Liquid crystal display device |
7292300, | Oct 31 2000 | Sharp Kabushiki Kaisha | Liquid crystal display with radially-inclined liquid crystal in unit solid portions arranged in a single direction |
7532291, | Oct 31 2000 | Sharp Kabushiki Kaisha | Liquid crystal display device |
7719656, | Sep 24 2003 | Sharp Kabushiki Kaisha | Liquid crystal display device |
7728937, | Jun 17 2004 | Sharp Kabushiki Kaisha | Multi-domain liquid crystal with axisymmetric alignment and electrode having asymmetrical cuts at the edge |
7843540, | Feb 28 2005 | Seiko Epson Corporation | Liquid crystal display device and electronic apparatus |
7995177, | Jun 09 2005 | Sharp Kabushiki Kaisha | Liquid crystal display device |
8345197, | Jun 09 2005 | Sharp Kabushiki Kaisha | Liquid crystal display device |
8421972, | Dec 28 2007 | Sharp Kabushiki Kaisha | Liquid crystal display device |
20030197819, | |||
20090185101, | |||
20110063558, | |||
JP2000305100, | |||
JP2004326140, | |||
JP2005284139, | |||
JP2006003626, | |||
JP2550627, | |||
WO2006132369, | |||
WO2009084162, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Sep 06 2012 | Sharp Kabushiki Kaisha | (assignment on the face of the patent) | / | |||
Feb 24 2014 | IYAMA, YUICHI | Sharp Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032405 | /0946 | |
Feb 24 2014 | SATOH, EIJI | Sharp Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032405 | /0946 | |
Feb 24 2014 | SAKAI, AKIRA | Sharp Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032405 | /0946 | |
Feb 24 2014 | MIYAZAKI, AKIKO | Sharp Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032405 | /0946 | |
Feb 25 2014 | WATANABE, HISASHI | Sharp Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032405 | /0946 | |
Feb 28 2014 | ASAOKA, YASUSHI | Sharp Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032405 | /0946 |
Date | Maintenance Fee Events |
Feb 07 2017 | ASPN: Payor Number Assigned. |
Nov 06 2019 | M1551: Payment of Maintenance Fee, 4th Year, Large Entity. |
Jan 29 2024 | REM: Maintenance Fee Reminder Mailed. |
Jul 15 2024 | EXP: Patent Expired for Failure to Pay Maintenance Fees. |
Date | Maintenance Schedule |
Jun 07 2019 | 4 years fee payment window open |
Dec 07 2019 | 6 months grace period start (w surcharge) |
Jun 07 2020 | patent expiry (for year 4) |
Jun 07 2022 | 2 years to revive unintentionally abandoned end. (for year 4) |
Jun 07 2023 | 8 years fee payment window open |
Dec 07 2023 | 6 months grace period start (w surcharge) |
Jun 07 2024 | patent expiry (for year 8) |
Jun 07 2026 | 2 years to revive unintentionally abandoned end. (for year 8) |
Jun 07 2027 | 12 years fee payment window open |
Dec 07 2027 | 6 months grace period start (w surcharge) |
Jun 07 2028 | patent expiry (for year 12) |
Jun 07 2030 | 2 years to revive unintentionally abandoned end. (for year 12) |